15-letter words containing w, i, l, s, t
- stalactite work — (in Islamic architecture) intricate decorative corbeling in the form of brackets, squinches, and portions of pointed vaults.
- starfish flower — carrion flower (def 2).
- stillson wrench — a large wrench having adjustable jaws that tighten as the pressure on the handle is increased
- streamline flow — the flow of a fluid past an object such that the velocity at any fixed point in the fluid is constant or varies in a regular manner.
- the devil's own — a very difficult or problematic (thing)
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- titius-bode law — Bode's law.
- training wheels — a pair of small wheels attached one on each side of the rear wheel of a bicycle for stability while one is learning to ride.
- tunbridge wells — a city in SW Kent, in SE England: mineral springs; resort.
- two-dimensional — having the dimensions of height and width only: a two-dimensional surface.
- two-thirds rule — a former rule in the Democratic Party, effective 1832–1936, requiring a vote of at least two thirds of its national convention delegates to nominate a presidential and vice-presidential candidate.
- tyrwhitt-wilson — Gerald Hugh, 14th Baron Berners [bur-nerz] /ˈbɜr nərz/ (Show IPA), 1883–1950, English composer, painter, and author.
- unanswerability — the quality of not being answerable or contestable
- untrustworthily — in an untrustworthy manner; not trustworthily
- vatican swindle — Lafcadio's Adventures.
- walking catfish — an Asian catfish, Clarias batrachus, that can survive out of water and move overland from one body of water to another: introduced into Florida.
- walpurgis night — (especially in medieval German folklore) the evening preceding the feast day of St. Walpurgis, when witches congregated, especially on the Brocken.
- washington lily — a lily, Lilium washingtonianum, of the western coast of the U.S., having whorled leaves and fragrant, purple-spotted white flowers.
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits
- welfare statism — the belief in or practices of a welfare state.
- well-advertised — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- well-positioned — condition with reference to place; location; situation.
- west nile fever — a viral disease, caused by a flavivirus and spread by a mosquito (Culex pipiens), that results in encephalitis
- west nile virus — an illness caused by a chiefly mosquito-borne virus of the genus Flavivirus, characterized in a small percentage of infected persons by fever, headache, muscle weakness, and sometimes encephalitis or meningitis.
- westphalian ham — a hard German ham with a distinctive flavor derived from being smoked over beechwood and juniper.
- whaling station — a place where the carcases of whales were processed
- whatshumacallit — Alternative form of whatchamacallit.
- whistle-blowing — a person who informs on another or makes public disclosure of corruption or wrongdoing.
- white corpuscle — white blood cell.
- wild strawberry — uncultivated plant bearing red fruit
- wilhelm meister — a novel (1795–1829) by Goethe.
- william webster — Daniel, 1782–1852, U.S. statesman and orator.
- wilson's petrel — a small petrel, Oceanites oceanicus, that breeds in the Southern Hemisphere but ranges into the North Atlantic and Pacific oceans.
- wilson's thrush — veery.
- winter holidays — a period of rest from work or studies taken in winter
- winter purslane — a plant, Montia perfoliata, native to western North America, of the purslane family, having edible, egg-shaped leaves and clusters of small, white flowers.
- winter solstice — the solstice on or about December 21st that marks the beginning of winter in the Northern Hemisphere.
- wish fulfilment — (in Freudian psychology) any successful attempt to fulfil a wish stemming from the unconscious mind, whether in fact, in fantasy, or by such disguised means as sublimation
- withdrawal slip — a small paper form which has to be filled in before making a withdrawal of money from a bank, building society, etc
- wolverine state — Michigan (used as a nickname).
- wrestling match — sport: contention by grappling opponent
- wrist wrestling — a form of arm wrestling in which two contenders interlock thumbs and try to force each other's hands to touch the table on which they are competing.
- yellow goatfish — a schooling goatfish, Mulloidichthys martinicus, inhabiting the Atlantic Ocean from Florida to Panama.